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Siebel Server Installation Guide for Microsoft Windows > Preparing for the Installation > Planning Your Siebel Deployment >

Sizing Your Installation

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After you have determined which Siebel environments you will install, you must determine:

Which relational database management system (RDBMS) you will use. For details, see Selecting Your RDBMS.
How many Siebel Servers you will need to connect to a database through a single Siebel Enterprise Server. For details, see Planning Your Siebel Environments.
On which machines and under which directory you want to install Siebel components. For details, see Dedicating Siebel Servers for Specific Services.

You should direct any additional sizing questions to Siebel Expert Services.

Selecting Your RDBMS

Determine which relational database management system (RDBMS) you will use with your Siebel application and what computer platform to run it on:

Verify which RDBMS products, versions, and patch levels are supported; check System Requirements and Supported Platforms.
Choose the platform on which your Siebel Database Server will run; consult your RDBMS manufacturer's documentation and System Requirements and Supported Platforms to determine which platforms are supported and what issues must be addressed.

NOTE:  No more than one RDBMS platform can exist within an Enterprise. For example, you cannot run both the Oracle and DB2 UDB databases.

When you have determined which RDBMS you will use, check off the proper choice in Deployment Planning Worksheets.

Planning Your Siebel Environments

Determine how many and what kind of Siebel environments you will support. It is recommended that you install at least three environments:

Development environment. For developing customized applications and configurations.
Test environment. For testing customized application configurations and upgrades for compatibility before upgrading your production environment.
Production environment. Your live Siebel operational environment.

Your production environment should have its own dedicated servers. Less intensively used Siebel environments, such as development and test environments, may share the same physical equipment. In general, do not load any one machine too heavily, or your Siebel system performance will suffer.

For more information on establishing and using Siebel environments, see Developing and Deploying Siebel eBusiness Applications.

When you have determined which environments you will install on your site and how many users each will support, write this information on your copy of Deployment Planning Worksheets.

Dedicating Siebel Servers for Specific Services

There can be numerous Siebel Servers, each of which provides a different type of service. Most consist of the same basic product, but are configured to provide specific information and functions needed by a variety of sales representatives, call centers, customer service representatives, and marketing personnel.

The installation process for all these servers is the same. You must simply determine which Siebel products you will install, provide appropriate computers for them, and include them in your planning. For example, you may want to provide a dedicated server for Siebel Enterprise Integration Manager (EIM), Siebel Remote, or other Siebel products.

When you have determined the number and types of Siebel Servers you require, and how many users each will support, record this information in your copy of the Deployment Planning Worksheet.

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